HVAC question - Heat pump compressor

Feb 20, 2011 8 Replies

I have a 15 year old FHP geothermal heat pump, the compressor won't start. In heat mode there is a slight humming, and every 30 seconds or so louder buzzing noise for a few seconds. The compressor is getting



220V to the contacts, the resistance between the then is in the range of 3 to 7 amps. I tested the start capacitor with a simple DMM using a resistance and volt modes, seems to work as it should. Any ideas? Time for a new heat pump? Should I try a new start capacitor anyway?

A simple DMM can not test the start capacitor. Either use a real piece of test equipment or take a chance and buy a new cap.

The compressor is getting

WTF does THAT mean please?

I tested the start capacitor with a simple DMM using a

Jeff

Tony,

A new cap and a hard start kit got the compressor running again, I appreciate your help.

John

Yes, I meant ohms not amps on the motor windings. Thanks for pointing it out so eloquently:)

Huh? I don't think you meant to write what you wrote there!

I'm still trying to figure that out. Maybe sarcastic? Nothing else makes sense.

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I found this article that may be helpful in answering your questions. I hope you get everything figured out!

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How old is the heat pump and what model is it? What part of the country do you live? Let me know if you need heat pump prices. Thanks

~James

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> I have a 15 year old FHP geothermal heat pump, the compressor won't

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